RM2: 10 m clear of the highest tide in the London Bridge ledgers

The lowest postcode in RM2, RM2 6DE, stands 10 m above the highest tide in the London Bridge ledgers (5.41 m, 1 February 1953). The highest, RM2 5QL, stands 30 m above it.
- Ground at eight in ten of its postcodes: between 29 m and 35 m, measured from Ordnance Datum; the middle one stands at 32 m.
- None lies in the Environment Agency's Flood Zone 3 from the sea.
- In Havering.